Nginx mod_strip -- nothing

Ok i decided to try mod_strip on my production server today.
Unfortunately when activated it does nothing.

url: http://www.nexusddl.com/
Config:
server {
listen 94.102.60.29:80;
server_name www.nexusddl.com;
location / {
proxy_pass http://IP;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host www.nexusddl.com;
strip on;
}
}